ImageJ is easy to modify if you know a bit of Java. I don’t know any Java. But here’s what I did to add keyboard shortcuts for the paint brush tool and the line selection tool. The code is based off this help file from the ImageJ website: http://rsbweb.nih.gov/ij/docs/guide/userguide-32.html

The first step was to figure out to refer to the line tool and paint brush tools. I did this by going to Plugins>Macros>Record and clicking on the line tool and the paint brush tool in succession. The numeric codes for those tools were revealed in the macro recording window … Continue Reading